Figmagic

Automate the generation of design tokens and specs from your Figma documents. Inspired by Salesforce Theo.

• Extract design tokens for colors, typography (line heights, font sizes, font families), spacing, and grids.
• Get design specifications for all of your Master Components.

A typical use case for the generated documents is to use the extracted values as a token base in CSS systems that support external values (such as Styled Components or Sass).

Please note: Figmagic requires that your document structure is identical to what I show in the template site at https://www.figma.com/file/KLLDK9CBSg7eAayiTY3kVqC8/Figmagic-Design-System-Example.

Built initially as an internal handoff tool for Humblebee.

Approach and use cases

There's a lot to say here about the use cases and approaches taken by other tools. I will be writing an article on the motivations behind the project later on.

The basic idea of Figmagic is to support an informed handoff between designers and developers. I believe the best way to do this in a solid, mature, and non-impeding way is:

• Expect relative and current value types that are optimally suited for each typology (unitless for line heights, rems for font sizes...). Don't use or expect px values in most cases.
• Transform values into a common set of tokens rather than output exact values, ie. use something like ${colors.midGray} rather than #3C3C3C.
• Ease the process of making, generating and using design specification by giving solid contextual understanding rather than being imperative and unnecessarily detailed

Example project

An example project—using React, Webpack and Styled Components—is available at https://github.com/mikaelvesavuori/figmagic-example.

Installation

You can use Figmagic either as an NPM package in its own folder, or as part of your projects. It is assumed you will use it as a dependency.

Figmagic uses ESM imports, so make sure you have a recent Node version, preferably version 10+.

Standalone

Running it standalone might be fine if you wish to isolate the tokens/spec generation, or if you don't have a project in which to place Figmagic, or if it simply makes more sense to have it on its own (for example doing a project in a non-Node environment).

Use . as a value in the path in the NPM config block to resolve from the Figmagic root.

• Clone/download the repository
• Place it where you want it!

As part of a Node.js project

You will probably want to consume it as a regular dependency.

• Add Figmagic as a project dependency, by running yarn add figmagic -S or npm install figmagic -S
• Add the below commands to your NPM scripts block
• Replace with your own file ID and token key (for more on this, go to Figma's developer docs)

Key/token locations

For use as a dependency

1. node_modules/figmagic/package.json: In the scripts block you will need to change the blanks to your actual file and token
2. node_modules/figmagic/bin/meta/keys.mjs: In the options object you will also need to change to your actual values; these are then used by Figmagic's functions

For development

1. package.json: In the scripts block you will need to change the blanks to your actual file and token
2. bin/meta/keys.mjs: In the options object you will also need to change to your actual values; these are then used by Figmagic's functions

Also, you will need to update the relative paths in the following files, if you wish to develop Figmagic rather than consume it as a dependency. The correct paths are available on the respective lines, but are commented out.

• bin/index.mjs; Update the import figmaDocument... path
• bin/getImages.mjs; Update the import imagesJson... path

Add Figmagic commands to your package.json file

The following block represents how you could add Figmagic commands to your NPM scripts block. Make sure to update to correct URL and token in the command figmagic:saveFromApi.

"config": {
	"figmagicPath": "node_modules/figmagic"
},
"scripts": {
		"figmagic": "yarn figmagic:clean && yarn figmagic:saveFromApi && yarn figmagic:build && yarn figmagic:getImages && yarn figmagic:downloadImages",
		"figmagic:clean": "rm -rf specs/ && rm -rf tokens/ && rm -rf grid/ && rm -rf figma && mkdir tokens && cp $npm_package_config_figmagicPath/.gridTemplate.mjs tokens/ && mv tokens/.gridTemplate.mjs tokens/grid.mjs",
		"figmagic:saveFromApi": "mkdir -p figma && wget 'https://api.figma.com/v1/files/{URL}' --header='X-Figma-Token: {TOKEN}' -O figma/figma.json",
		"figmagic:tokens": "yarn figmagic:clean && yarn figmagic:saveFromApi && yarn figmagic:build",
		"figmagic:build": "node --experimental-modules $npm_package_config_figmagicPath/bin/index.mjs",
		"figmagic:getImages": "node --experimental-modules $npm_package_config_figmagicPath/bin/getImages.mjs",
		"figmagic:getGraphics": "node --experimental-modules $npm_package_config_figmagicPath/bin/getImages.mjs --graphics",
		"figmagic:downloadImages": "node --experimental-modules $npm_package_config_figmagicPath/bin/downloadImages.mjs",
		"figmagic:downloadGraphics": "node --experimental-modules $npm_package_config_figmagicPath/bin/downloadImages.mjs --graphics",
		"figmagic:optimizeGraphics": "svgo -f ./specs/graphics/ --multipass --disable=removeViewBox --enable=removeDimensions"
}

Figma setup

Your structure needs to correspond to the following:

• Pages need to exist and be called "Components", "Design tokens", and "Grid"
• Further, inside "Design tokens", frames need to be called "Colors", "Font sizes", "Font families", "Font weights", "Line heights", and "Spacing" – exact casing is not important, however the spelling is important!
• All items on a page need to be contained within one or more frames

See a demo/template at https://www.figma.com/file/KLLDK9CBSg7eAayiTY3kVqC8/Figmagic-Design-System-Example.

Note: You must follow the document structure as seen in the image below and in the template linked above.

Figma styles

Figma styles became publicly available in June 2018 and are incredibly valuable for designers to create single-sources-of-truth when it comes to design values (tokens). When using Figmagic though, the thinking and usage is a bit different from how Figma styles work.

Unidimensional or multidimensional values

A Figma style is multidimensional: It contains any number of properties wrapped into one style, acting as kind of a package. This is extremely handy in a design environment and is very practical from a user standpoint. The user doesn't have to think too hard about storing "redundant" values that are the same in another component, such as N number of units for line height: They are all taken care of.

Figmagic instead expresses tokens as instances of every individual value, thus being unidimensional – storing only one value per item. Examples could be sets of line heights, font weights, or font sizes, each one individually specified. This means that values can be used and mixed as pleased in any number of contexts, not becoming bound to one specific context such as a certain kind of heading. This is good for a developer because we would rather just map out the definitive values for something, onto a component (a "context" so to speak).

Because of this difference, the appropriate way to structure a Figmagic-compatible Figma design document is to display one or more items/tokens in the respective frames that correspond to the accepted token types (line height, font size...) where each item has only one key property that's changed in-between them (such as one text using size 48, the next using size 40...), since those items are what Figmagic loops through when creating your code tokens.

OK, but should I use Figma styles (also) when using Figmagic?

Whatever suits you! As long as you remember that what Figmagic fetches are those single (unidimensional) values from each design item/token it should all work. Figma styles may help you to work though, and is probably just a good thing for any regular normal design work. Again though, Figmagic does not use those values.

Token formatting/conversion

Grid

Uses any combination of rows, columns, and grid (but only one of each type). Grid sizes will use the native Javascript Math.floor() function to round down any decimal values. This may or may not cause issues, but is at least more hygienic than leaving potentially weird numbers for grid sizes.

Font families

Postscript name (eg. FiraSans-Regular).

Font weights

Work in progress.

Font sizes

Rem units based on global font size (base 16px, change this within Figmagic also, if you've altered this value in your CSS).

Line heights

Unitless.

Colors

RGBA colors.

Spacing

Em units.

Spec output

Specifications for components are generated into the specs folder. A component will be anything that Figma catches as a component, regardless if they exist in your "Components" page or not.

Example of a Button component

const buttonFigma = {
  name: "Button Figma",
  gridWidth: 1,
  perfectlyFitsGrid: true,
  pxWidth: 200,
  pxHeight: 40,
  description: "Regular button\nBold text\nLine height medium",
  subComponents: ["Box", "Button Text"],
  id: "5:9"
};

export default buttonFigma;

• name: The name of the component inside Figma
• gridWidth: How wide the component is counted in your grid units. Note: It will always use a higher value if not an exact fit (see below)
• perfectlyFitsGrid: A boolean (true/false) to debug whether the component fits exactly in the grid or if it's bigger (see above)
• pxWidth: How many pixels wide is the component in Figma
• pxHeight: How many pixels high is the component in Figma
• description: The description given in Figma. Hint: Use this!
• subComponents: What first-level subcomponents does the component include?
• id: The Figma internal ID for the component

Structure

• bin contains the project's MJS files; bin/functions contains most of the functions
• figma will contain the extracted Figma JSON and various build-time JSON files
• tokens will contain the token files (in .mjs format)
• specs will contain specifications for all Master Components
• specs/images will contain generated images for your components
• specs/graphics will contain generated graphics for your components (you will need to add the parameter -- graphics to the call to getImages and downloadImages)

Known issues

• The package.json commands uses Bash syntax which means it's all Mac (or Windows Bash) for now
• Figmagic will break if there is no grid.mjs file in the tokens folder, so the clean command puts an empty grid file there on wipe (if you ever wonder about why there is a .gridTemplate.mjs file in the root!)

Possible upcoming features

• The perfectlyFitsGrid property is currently a uni-dimensional boolean, and is therefore true only for one grid size, so it doesn't really work for a set of sizes (mobile, tablet, desktop)
• Possibility to configure Figmagic through a config object
• Possibility to specify whether you want MJS or JS file as final output files
• Greater customizability of units, paths, etc.
• Still getting too many specs (for subcomponents)...?
• Map component values to tokens
• Create error report if something gets botched during build-time
• Create and update changelog
• If Figma gets webhooks, create some way of automatically pulling updates

Want to add or rethink something in Figmagic?

You are very welcome to contribute to the project! Pull requests welcome, as well as issues or plain messages.